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ERTH101 Exam Questions And Answers
100% Verified.
a. it is intrinsically bright (a bright bulb)
b. it is close to us
c. both a. and c. are possible [TACNO]
d. it is intrinsically dim (a dim bulb - Answer✔✔Somes stars appear bright to our eyes in the
night skiy. The reason a star appears bright is because
alpha - Answer✔✔The brightest star in a consteallation is named for the Greek letter a; for
example ________ - Orionis is another name for the star Betelgeuse.
the Earth is rotating on its axis - Answer✔✔The stars in the sky appear to move on a giant
"celestial sphere" because
88 constellations - Answer✔✔The stars in the sky are organized into groups of stars called
constellations which appear near each other in the sky but are not necessarily close together in
space. How many constellations are currently accepted by the IAU?
Hipparchus - Answer✔✔This Greek Astronomer established a magnitude scale for stars. The
brightest were called first magnitude stars, and the dimmest that could be seen with the ey were
sixth magnitude.
more than half full - Answer✔✔A gibbous phase means the moon is
1/2 of it - Answer✔✔According to Phil, all spherical objects in space have the same amount lit
up by the sun. What fraction of the moon is always lit up by the sun (as seen from space).
52 minutes later - Answer✔✔Because of its orbit around the Earth, the moon rises about
______________________ each day.
Full Earth (entire face illuminated) - Answer✔✔If you could stand on the moon when you see it
as a New Moon, you would see the Earth as a
Terminator - Answer✔✔The line which divides the sunlit side from the dark side of the moon is
called the
1
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setting on the western horizon - Answer✔✔When the first quarter moon is highest in the sky,
where is the sun?
Earthshine - Answer✔✔When you see a waxing crescent phase in the sky, you can still "see" the
dark part of the moon, the part not lit up by direct sunshine due to light reflected from the Earth
which then hits the Moon. This light is called
Full Moon - Answer✔✔Which phase of the moon is "opposite the sun"? The phase when the
Moon is rising as the sun is setting is
True - Answer✔✔The moon is visible during the day time? (When the sun is out) T/F?
the moon passes between the Earth and the sun blocking the light of the sun from reaching Earth
- Answer✔✔A solar eclipse occurs when
Only a few minutes - Answer✔✔A total solar eclipse will last for
several hours - Answer✔✔An umbral lunar eclipse can last for
solar eclipse - Answer✔✔If the orbit of the moon were in the same orbital plane as the Earth
(ecliptic plane) then every time the New Moon phase happened, we would also experience a
a sphere - Answer✔✔The ancient Greek astronomers noticed that the shape of the Earth shadow
during a lunar eclipse is always circular, which is only possible if the Earth is
the moon is at apogee and appears smaller than the sun, leaving a ring or annulus of light when it
is in front of the sun - Answer✔✔The reason for an annular solar eclipse is that
the darkest part of the Earth shadow - Answer✔✔The umbra of the Earth shadow is
True - Answer✔✔Greek astronomer were able to estimate the size of the Moon relative to the
Earth 2000 years ago by using the shadow of the Earth on the Moon during a lunar eclipse. T/F?
the amount of "stuff" that makes up an object - Answer✔✔According to Phil Plait, mass is
when we are held up by the ground - Answer✔✔According to Phil, the only time we experience
our weight is when
e. both a. and c. are correct - Answer✔✔An object with a greater mass is
a. harder to stop
b. easier to stop
c. harder to accelerate
d. easier to accelerate
Yes - Answer✔✔Do the astronauts orbiting in the International Space Station 400 km above the
surface of the Earth (290 miles), have a force of gravity acting on them from the Earth? Y/N?
2
ERTH101 Exam Questions And Answers
100% Verified.
a. it is intrinsically bright (a bright bulb)
b. it is close to us
c. both a. and c. are possible [TACNO]
d. it is intrinsically dim (a dim bulb - Answer✔✔Somes stars appear bright to our eyes in the
night skiy. The reason a star appears bright is because
alpha - Answer✔✔The brightest star in a consteallation is named for the Greek letter a; for
example ________ - Orionis is another name for the star Betelgeuse.
the Earth is rotating on its axis - Answer✔✔The stars in the sky appear to move on a giant
"celestial sphere" because
88 constellations - Answer✔✔The stars in the sky are organized into groups of stars called
constellations which appear near each other in the sky but are not necessarily close together in
space. How many constellations are currently accepted by the IAU?
Hipparchus - Answer✔✔This Greek Astronomer established a magnitude scale for stars. The
brightest were called first magnitude stars, and the dimmest that could be seen with the ey were
sixth magnitude.
more than half full - Answer✔✔A gibbous phase means the moon is
1/2 of it - Answer✔✔According to Phil, all spherical objects in space have the same amount lit
up by the sun. What fraction of the moon is always lit up by the sun (as seen from space).
52 minutes later - Answer✔✔Because of its orbit around the Earth, the moon rises about
______________________ each day.
Full Earth (entire face illuminated) - Answer✔✔If you could stand on the moon when you see it
as a New Moon, you would see the Earth as a
Terminator - Answer✔✔The line which divides the sunlit side from the dark side of the moon is
called the
1
, ©FYNDLAY.
setting on the western horizon - Answer✔✔When the first quarter moon is highest in the sky,
where is the sun?
Earthshine - Answer✔✔When you see a waxing crescent phase in the sky, you can still "see" the
dark part of the moon, the part not lit up by direct sunshine due to light reflected from the Earth
which then hits the Moon. This light is called
Full Moon - Answer✔✔Which phase of the moon is "opposite the sun"? The phase when the
Moon is rising as the sun is setting is
True - Answer✔✔The moon is visible during the day time? (When the sun is out) T/F?
the moon passes between the Earth and the sun blocking the light of the sun from reaching Earth
- Answer✔✔A solar eclipse occurs when
Only a few minutes - Answer✔✔A total solar eclipse will last for
several hours - Answer✔✔An umbral lunar eclipse can last for
solar eclipse - Answer✔✔If the orbit of the moon were in the same orbital plane as the Earth
(ecliptic plane) then every time the New Moon phase happened, we would also experience a
a sphere - Answer✔✔The ancient Greek astronomers noticed that the shape of the Earth shadow
during a lunar eclipse is always circular, which is only possible if the Earth is
the moon is at apogee and appears smaller than the sun, leaving a ring or annulus of light when it
is in front of the sun - Answer✔✔The reason for an annular solar eclipse is that
the darkest part of the Earth shadow - Answer✔✔The umbra of the Earth shadow is
True - Answer✔✔Greek astronomer were able to estimate the size of the Moon relative to the
Earth 2000 years ago by using the shadow of the Earth on the Moon during a lunar eclipse. T/F?
the amount of "stuff" that makes up an object - Answer✔✔According to Phil Plait, mass is
when we are held up by the ground - Answer✔✔According to Phil, the only time we experience
our weight is when
e. both a. and c. are correct - Answer✔✔An object with a greater mass is
a. harder to stop
b. easier to stop
c. harder to accelerate
d. easier to accelerate
Yes - Answer✔✔Do the astronauts orbiting in the International Space Station 400 km above the
surface of the Earth (290 miles), have a force of gravity acting on them from the Earth? Y/N?
2
